Powdered Radiator Stop Leak
Hover over the image to zoom in
Share this:

Alumaseal Powdered Radiator Stop Leak

Part No. ASBP 73 Warranty Details  
$3.39
Quantity  Add to Cart
AlumAseal® is safe for all cooling system parts and is compatible with all antifreeze, including extended-life coolants and Dex-Cool.

Product Features:
  • Stops leaks safely, quickly and easily
  • Compatible with all antifreeze and coolants
  • Safe for all metal, plastic and rubber cooling system parts
  • Prevents cooling system damage
Back To Top
Type:Powdered Stop Leak
Container Type:Plastic tube
Permanent Repair:Yes
Lubricates Water Pump Seals:No

REVIEW SNAPSHOT®

by PowerReviews
AlumasealPowdered Radiator Stop Leak
 
4.7

(based on 13 reviews)

Ratings Distribution

  • 5 Stars

     

    (10)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Easy to use (8)
  • Reliable (5)

Cons

No Cons

Best Uses

  • Roadside repairs (6)
  • Home garage (5)
    • Reviewer Profile:
    • Casual driver (3)

Most Liked Positive Review

 

does grate job easy to use,does not clog

i used this on my way to key west and work great and did not clog my cooling fins inside radiator AAA+++ still working good

i used this on my way to key west and work great and did not clog my cooling fins inside radiator AAA+++ still working good

VS

Most Liked Negative Review

 

Ordered and paid for 2,Only one was put in the order.

Ordered and paid for 2,Only one was put in the order.

Ordered and paid for 2,Only one was put in the order.

Reviewed by 13 customers

Displaying reviews 1-10

Back to top

Previous | Next »

(1 of 1 customers found this review helpful)

 
5.0

It worked for me and my Honda!

By 

from Lebanon, NH

Comments about Alumaseal Powdered Radiator Stop Leak:

13 yr old Honda Civic. Had recently started seeing a big spike in temperature gauge, no heat blowing into passenger compartment and started adding coolant but there was a leak. Decided to try this stuff (had one time in the past). Poured the powder into a cool radiator and topped off with coolant. Next day I drove: temp gauge went back to normal range, heat working great and no detectable leaks.

 
5.0

It Works !

Comments about Alumaseal Powdered Radiator Stop Leak:

After changing timing belt and water pump, and hoses on a Camry i was losing a small amount of coolant over a week or so. I put this in and after driving for about an hour to circulate and heat up yhe engine, it has been a while with no more drop in coolant level.

Give it a try.

  • Was this a gift?:
  • No

(9 of 12 customers found this review helpful)

 
5.0

It Worked

By 

from Miami, FL

Pros

  • Can Withstand Use
  • Compact Design
  • Easy To Use
  • Reliable

Cons

    Best Uses

      Comments about Alumaseal Powdered Radiator Stop Leak:

      I have a 1996 Taurus that was leaking at the radiator side tank crimp, I followed the instructions so I turned the car on a cold engine, turn the heat on, took the coolant tank car off poured this Alumaseal in the coolant tank in 5 – 10 seconds my leak was sealed and has been sealed for a month now with no signs of leaking in that same area. Very good stuff I recommend it.

      (13 of 18 customers found this review helpful)

       
      5.0

      I was skeptical but it worked

      By 

      from Lexington, KY

      About Me Auto Enthusiast, DIY Mechanic, Truck Enthusiast

      Pros

      • Cheap
      • Does Not Seem To Clog Up
      • Easy To Use
      • Effective

      Cons

        Best Uses

        • Cooling System Leaks
        • Home Garage
        • Radiator Leaks
        • Roadside Repairs

        Comments about Alumaseal Powdered Radiator Stop Leak:

        After a bad experience with a radiator and cooling system full of that unnamed "bars of leak" stuff's black goo I wasn't a fan of leak fixing concoctions. However a few years ago I was running low on funds and the water pump on my old diesel Blazer was leaking very slightly. I realized it wasn't the pump but the plate the pump mounts to that was leaking. Fixing it would have required pulling the whole front of the engine apart and the truck ran fine otherwise. After a couple friends of mine who were mechanics and several skilled home mechanics recommended this to me I figured it couldn't hurt any.
        Sure enough it worked. Sealed up within the first drive and I owned the truck for almost two more years and it never leaked again from that spot or anywhere else.

        (10 of 14 customers found this review helpful)

         
        5.0

        Works Great

        By 

        from Atlanta

        About Me Auto Enthusiast

        See all my reviews

        3 or more reviews submitted

        Pros

        • Easy To Use

        Cons

          Best Uses

          • Home Garage
          • Roadside Repairs

          Comments about Alumaseal Powdered Radiator Stop Leak:

          My I30 had a crack in the heater core outlet. They are made of plastic and become brittle with age. It wasn't a huge leak but just a slow drizzle that would need to be topped off every day. I wanted to give this a try before I started looking into replacing the heater core which is very labor intensive. Tried this product and the leak stopped after 10 minutes of driving and hasn't recurred since. It's been a week and so far so good.

          (13 of 18 customers found this review helpful)

           
          5.0

          Worked great for me

          By 

          from East Texas

          About Me Casual Driver

          Comments about Alumaseal Powdered Radiator Stop Leak:

          If you can locate the leak, I honestly suggest to fix it if you are in a lacation to do that. On the road and far from home sometimes makes that a less than desirable choice. My problem is that on my daughters car, and one of mine, I was losing small amounts of coolant daily, but could not find any visible leak, even under pressure. I checked many locations and just could not locate it. Finally decided it was either in a location that as it slowly seeped it was turned to steam and evaporated, or internal to the engine, somewhere. So I added a 20 gram tube of alumaseal to each radiator and drove about 20 or 30 minutes. Loss of coolant stopped immediately. Both cars. 6 months ago on her car and 1 month ago on mine. There has been no after affect on either car, heaters, valves, pumps, etc. I personally think this is the best product I have ever used. I have no plans to remove it, because if I did, I still would not know where the original leak was.

          (76 of 136 customers found this review helpful)

           
          5.0

          radiator leak

          By 

          from cincinnati, oh nasti nati

          About Me Casual Driver

          See all my reviews

          Verified Buyer
          Helpful Reviewer

          Pros

          • Easy To Use
          • Reliable

          Cons

            Best Uses

            • Roadside Repairs

            Comments about Alumaseal Powdered Radiator Stop Leak:

            [...] i used it on my way to work. within the 16 mi commute to work the engine had begun to seal itself. thanks

            (81 of 145 customers found this review helpful)

             
            5.0

            stop leak by alumaseal

            By 

            from Interlachen,Fl

            About Me Casual Driver

            Verified Buyer
            Helpful Reviewer

            Pros

            • Easy To Use
            • Reliable

            Cons

              Best Uses

              • Home Garage

              Comments about Alumaseal Powdered Radiator Stop Leak:

              priced right and worked great

              (87 of 149 customers found this review helpful)

               
              5.0

              does grate job easy to use,does not clog

              By 

              from Florida

              About Me Competitive Driver, Mechanic

              Verified Reviewer

              Pros

              • Can Withstand Use
              • Compact Design
              • Easy To Use
              • Reliable

              Cons

                Best Uses

                • Home Garage
                • Roadside Repairs

                Comments about Alumaseal Powdered Radiator Stop Leak:

                i used this on my way to key west and work great and did not clog my cooling fins inside radiator AAA+++ still working good

                (111 of 182 customers found this review helpful)

                 
                5.0

                it's cheap but does a great job.

                By 

                from adel,ga

                About Me Casual Driver, Mechanic

                Helpful Reviewer

                Pros

                • Easy To Use
                • Reliable

                Cons

                  Best Uses

                  • Roadside Repairs

                  Comments about Alumaseal Powdered Radiator Stop Leak:

                  pour it in and drive.

                  Displaying reviews 1-10

                  Back to top

                  Previous | Next »

                  Do you have questions about this product?

                   

                  Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                  43 Questions | 57 Answers
                  Displaying questions 1-10Previous | Next »
                  • Q:

                    Will this product stop a small seeping leak in the cylinder head of a Triumph TR3 ?
                    The antifreeze comes out very slowly. Will this stop the leak permanently?
                    Asked on 6/7/2017 by Wilmer from Berne, IN

                    3 answers

                    • A:

                      We had a small antifreeze leak coming out of our engine on our Envoy
                      somewhere other than the radiator (can't remember where my husband told me)
                      and we poured the stop leak into the radiator while the car was running up
                      on ramps and just watched the leak get smaller and smaller until it stopped.
                      Hasn't leaked again and it's been at least 9 months.

                      Answered on 6/9/2017 by carlawaltman from undisclosed
                    • A:

                      It might.. sometimes it works and sometimes it doesn't.. I wouldn't ever say that it's a permanent fix every cars situation is different.
                      Sent from my Verizon, Samsung Galaxy smartphone

                      Answered on 6/8/2017 by marcbiggs from undisclosed
                    • A:

                      Not likely. This product is made for radiator and heater core leaks.

                      Answered on 6/7/2017 by cdyhall from undisclosed
                  • Q:

                    We had to put water in the radiator, because we didn't have antifreeze on hand and it was bone dry. Can I still use this product?
                    Asked on 5/15/2017 by Ute from New York

                    2 answers

                    • A:

                      Absolutely.
                      Sent from my iPhone

                      Answered on 5/15/2017 by josephrusso63 from undisclosed
                    • A:

                      Yes add to the system and run car immediately for 15 or more minutes . You will want to drain part of thre fluid in the near future and I would add antifreeze and another capsule of stop leak
                      Sent from my iPhone

                      Answered on 5/15/2017 by amerecium from undisclosed
                  • Q:

                    When can i put the product? When is hot or cool?
                    Asked on 4/18/2017 by jdh from naranjito, PR

                    7 answers

                    • A:

                      Put it in cold
                      Sent from my Verizon, Samsung Galaxy smartphone

                      Answered on 4/19/2017 by marcbiggs from undisclosed
                    • A:

                      add stop leak when engine is at operating temp. Just follow instructions. Do not open a hot radiator cap...

                      Answered on 4/19/2017 by butch_marshall from undisclosed
                    • A:

                      I have used this product when I have noticed that I am having to frequently fill up the coolant reservoir,
                      DO NOT put in the coolant reservoir!
                      Wait till the radiator cap is cool to the touch - open the radiator cap - pour contents directly into radiator - fill radiator with coolant - replace radiator cap - add coolant to coolant reservoir as needed.

                      Answered on 4/19/2017 by bill_bass from undisclosed
                    • A:

                      blockquote, div.yahoo_quoted { margin-left: 0 !important; border-left:1px #715FFA solid !important; padding-left:1ex !important; background-color:white !important; } Either but be careful if hot , cooling systems can be under pressure and you can get burnt . 
                      Sent from Yahoo Mail for iPhone

                      Answered on 4/19/2017 by ensignracing from undisclosed
                    • A:

                      Your radiator needs to be cool when you remove the pressure cap to add the Stop Leak to the radiator.

                      Answered on 4/18/2017 by rgfllamas from undisclosed
                    • A:

                      I put it in when it was cool so I didn't burn myself. It should say in the directions to drive around after putting it in to warm the engine up.

                      Answered on 4/18/2017 by stutz.luke from undisclosed
                    • A:

                      You have to put in in the car when it's cool then run or drive the car for
                      up to 30 minutes
                      Ed

                      Answered on 4/18/2017 by eeells13 from undisclosed
                  • Q:

                    Can it stop the leak from the actually radiator hose? Because it is a leak from the hose not the radiator
                    Asked on 2/15/2017 by Kadie from Tampa, FL

                    1 answer

                    • CUSTOMER CARE

                      A:

                      No, Kadie, this Alumaseal Powdered Radiator Stop Leak (Part No. ASBP 73) will not stop the leak from the radiator hose.

                      Answered on 2/16/2017 by Steve from AAP
                  • Q:

                    If what if I drive around for 20 minutes how long do I have to let it sit before I can shut it off?
                    Asked on 11/6/2016 by Dave from Alvin, TX

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Dave, glad to help you! You should notice the leak slowing within a few minutes after adding the product, but certainly within 200 miles of driving or less, as it takes a while to thoroughly circulate through the cooling system and stop the leak.

                      Answered on 11/8/2016 by Steve from AAP
                  • Q:

                    any problems in using it in a 2006 DTS Cadillac to fix a leak in the heater core?
                    Asked on 9/10/2016 by fixer

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Yes, Fixer! This Alumaseal Powdered Radiator Stop Leak - Part No. ASBP 73 is completely safe and fix leaks in heater cores, radiators, and cooling system parts. It is effective in all extended life coolants.

                      Answered on 9/15/2016 by Solomon from AAP
                  • Q:

                    I have a small leak on the top seam on a plastic radiator. The car is a 1999 Honda Accord V6. Will this work?
                    Asked on 8/3/2015 by David from NC

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi David, glad to assist you! AlumAseal is the original powder solution for stopping radiator and cooling system leaks. Simply pour in Alumaseal powder and wait for the patented formula to find and seal most cooling system leaks. Alumaseal powder is safe with all types of antifreeze, prevents rust and helps lubricate the water pump. Safe for all metal, plastic, and rubber cooling system parts.

                      Answered on 8/4/2015 by Steve from AAP
                  • Q:

                    Is this product ok to use on a 2002 toyota camry?
                    Asked on 5/23/2015 by Frank

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Frank, I'm happy to help you! This Alumaseal Powdered Radiator Stop Leak (Part No. ASBP 73) is not specifically made for your vehicle. This item is compatible with all antifreeze, including extended-life coolants and Dex-Cool.

                      Answered on 5/23/2015 by Steve from AAP
                  • Q:

                    Hello, I recently bought this product. I wanted to know what is the correct amount of stop leak powder to put in for a 4 Cylinder engine.
                    Asked on 10/30/2014 by Marco from United States

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Marco, glad to assist you! One tube or bottle of ALUMASEAL radiator stop leak powder will treat up to 20 quarts [5 gallons/ 18.9 L]. Usage Directions: Remove radiator cap only after engine is off and cold. Turn heater control to hot. Pour contents of tube directly into radiator. Add coolant to proper level if necessary. Replace radiator cap. Drive vehicle to seal leaks.

                      Answered on 11/13/2014 by Steve from AAP
                  • Q:

                    How long do I need to drive the car in order for it to work?
                    Asked on 7/27/2014 by Joshua

                    1 answer

                    • CUSTOMER CARE

                      A:

                      Hi Joshua, good question! You will need to keep your car idle for about 20 - 30 mins for it to work.

                      Answered on 7/29/2014 by Steve from AAP
                  Displaying questions 1-10Previous | Next »

                  Do you have a question about this product? 

                  Check out the specials in our monthly flyer.
                   
                   
                  Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.